From Givetel calling regarding Private Health Insurance. Don't answer.

I got a missed call from this number this afternoon....I have returned the call several times but according to Optus the number is disconnected.

Caller: Assistance Dogs Australia

Wanting funding.

Caller: A leading charity

This number called. I didn't answer. Called back and the voicemail said "a leading charity tried to call me". Now blocked this number

I have blocked 10 numbers beginning with the same 0488 815.. don’t bother answering.

I returned a call from 0488 815 669 but the voicemail didn't mention the company name

Rings multiple times a day and just hangs up. Seems related to similar 0488 815 numbers, as I have received calls from several variations all starting with 0488 815 ...